A Turgo turbine system comprises a penstock, nozzle and
turbine disc or wheel. The Turgo turbine model is required give
a robust and computationally simple first approximation of performance
characteristics and to identify the critical parameters
to be experimentally controlled. Fig. 2b shows a general diagram
for the interaction between the water jet and a set of
Turgo turbine cups, with Fig. 3a and b showing the velocity
diagrams.